List of sovereign states and dependent territories in Oceania

This is a list of sovereign states and dependent territories in the geographical region of Oceania. Although it is mostly ocean and spans many tectonic plates, Oceania is occasionally listed as one of the continents.
Most of this list follows the boundaries of geopolitical Oceania, which includes Australasia, Melanesia, Micronesia, and Polynesia. The main continental landmass of Oceania is Australia.

Boundaries of Oceania

The boundary between Southeast Asia and Oceania is not clearly defined. For political reasons, the United Nations considers the boundary between the two regions to be the Indonesian–Papua New Guinean border. Papua New Guinea is occasionally considered Asian as it neighbours Indonesia, but this is rare, and it is generally accepted to be part of Oceania. Geologically, the six Indonesian provinces in Western New Guinea and Aru Islands in Maluku Province are parts of the Australian continental shelf. Biogeographically, the Wallace line separates Asia from Wallacea, a transitional zone, while the Lydekker line separates it from Australia. Weber Line is the midpoint, at which Asian and Australian fauna and flora are approximately equally represented.
Likewise, there is also no clearly defined boundary between Latin America and Oceania; the mostly uninhabited oceanic Pacific islands near Latin America have been considered by some as part of Oceania, both historically and in present-day times. Nearly all of these islands have become politically associated with the Americas, but none lie on the respective tectonic plates of those continents, nor were any inhabited by Indigenous peoples of the Americas during the pre-Columbian era. Some share strong biogeographical affinities to geopolitical Oceania. The Malay Archipelago has historically been associated with Oceania, however, very few present-day definitions include it as part of Oceania. The Malay Archipelago lies on the continental shelf of Asia; Christmas Island and Cocos Islands lie on the Australian tectonic plate, and are not politically associated with Asia. The Bonin Islands, which have been politically integrated into Japan, are not geologically associated with the Asian continent, and are biogeographically within Micronesia.

Sovereign states

United Nations member states

This section includes all sovereign states located predominantly in Oceania that are member states of the United Nations. All 14 states are full members of the Pacific Islands Forum.

Flag	Coat of Arms / National Emblem	Map	English short, formal names, and ISO	Domestic short and formal name	Capital	Population	Area
			Australia Commonwealth of Australia AUS		Canberra
			Fiji Republic of Fiji FJI	Fiji Hindi फीजी/Fiji - रिपब्लिक ऑफ फीजी/ Ripablik ăph Phījī	Suva
			Kiribati Republic of Kiribati KIR		South Tarawa ----Bairiki
			Marshall Islands Republic of the Marshall Islands MHL		Majuro
			Federated States of Micronesia FSM		Palikir
			Nauru Republic of Nauru NRU		No official Capital ----Government offices are in Yaren	10,834
			New Zealand NZL		Wellington
			Palau Republic of Palau PLW		Ngerulmud
			Papua New Guinea Independent State of Papua New Guinea PNG		Port Moresby
			Samoa Independent State of Samoa WSM		Apia
			Solomon Islands SLB		Honiara
			Tonga Kingdom of Tonga TON		Nukuʻalofa
			Tuvalu TUV		Funafuti
			Vanuatu Republic of Vanuatu VUT		Port Vila

Associated states

Two states, the Cook Islands and Niue, are in free association with New Zealand. While maintaining a close constitutional and political relationship with New Zealand, both states have full treaty-making capacity and are members of several United Nations specialized agencies. Both independently engage in diplomatic relations with sovereign states under their own name, and are full members of the Pacific Islands Forum. Because of these features, both act in many ways as fully independent states.

Flag	Coat of Arms / National Emblem	Map	English short and formal names	Status	Domestic short and formal names	Capital	Population	Area
			Cook Islands	Self-governing in free association with New Zealand. It shares a head of state with New Zealand as well as having shared citizenship, but is independent in its internal affairs.		Avarua	11,124
			Niue	Self-governing in free association with New Zealand. It shares a head of state with New Zealand as well as having shared citizenship, but is independent in its internal affairs.		Alofi	1,311

Non-sovereign territories

The following are entities considered to be within Oceania that fall into one of these categories:
1. Federal territories of sovereign states located outside these states' mainland.
2. Territories that constitute integral parts of sovereign states in some form other than as federal territories, where a significant part of the sovereign state's landmass is located outside Oceania or the territory is located outside the sovereign state's mainland. Many of these territories are often described as dependencies or autonomous areas.
3. Dependent territories of sovereign states.
Two of these territories are associate members of the Pacific Islands Forum, while five others hold observer status within the organization.

Flag	Coat of Arms / National Emblem	Map	English short and formal names	Status	Domestic short and formal names	Capital	Population	Area
			American Samoa Territory of American Samoa	Unincorporated territory of the United States		Pago Pago	67,242
			Ashmore and Cartier Islands Territory of Ashmore and Cartier Islands	External territory of Australia		None	Uninhabited
			Baker Island	Unincorporated territory of the United States		None	Uninhabited
			Central Papua Central Papua Province	Province of Indonesia		Nabire Regency	1,408,981
			Christmas Island	External territory of Australia		Flying Fish Cove / The Settlement	1,843
			Clipperton Island	Overseas state private property		None	Uninhabited
			Cocos Islands	External territory of Australia		West Island / Bantam	544
			Coral Sea Islands Coral Sea Islands Territory	External territory of Australia		Willis Island	Uninhabited
			Easter Island	Special territory of Chile		Hanga Roa	6,148
			French Polynesia Overseas Country of French Polynesia	Overseas country of France		Papeete	294,935
			Galápagos Islands	Special territory of Ecuador		Puerto Baquerizo Moreno	35,000
			Guam Territory of Guam	Unincorporated territory of the United States		Hagåtña / Agaña	183,286
			Hawaii State of Hawaii	State of the United States		Honolulu	1,404,054
			Highland Papua Highland Papua Province	Province of Indonesia		Jayawijaya Regency	1,408,641
			Howland Island	Unincorporated territory of the United States		None	Uninhabited
			Jarvis Island	Unincorporated territory of the United States		None	Uninhabited
			Johnston Atoll	Unincorporated territory of the United States		None	Uninhabited
			Juan Fernández Islands	Special territory of Chile		San Juan Bautista	900
			Kingman Reef	Unincorporated territory of the United States		None	Uninhabited
			Midway Atoll	Unincorporated territory of the United States		None	Uninhabited
			New Caledonia Territory of New Caledonia and Dependencies	Overseas sui generis collectivity of France		Nouméa	256,275
			Norfolk Island Territory of Norfolk Island	External territory of Australia	Norfuk: Teratri of Norf'k Ailen	Kingston	2,169
			Northern Mariana Islands Commonwealth of the Northern Mariana Islands	Unincorporated territory and commonwealth of the United States	Carolinian: Téél Falúw kka Efáng Ilól Marianas	Saipan	46,050
			Ogasawara Village	Part of Ogasawara Village in Tokyo, Japan	Bonin Islands: Marcus Island: Parece Vela Reef: Rosario Island: Volcano Islands:	Ōmura	2,871
			Palmyra Atoll	Incorporated territory of the United States		None	Uninhabited
			Papua Papua Province	Province of Indonesia		Jayapura	1,020,190
			Pitcairn Islands Pitcairn Group of Islands	British overseas territory	Pitkern: Pitkern Ailen	Adamstown	48
			South Papua South Papua Province	Province of Indonesia		Merauke Regency	517,623
			Southwest Papua Southwest Papua Province	Province of Indonesia		Sorong	603,054
			Tokelau	Dependent territory of New Zealand		Each Atoll has its own administrative centre.	1,384
			Wake Island	Unincorporated territory of the United States		None	Uninhabited
			Wallis and Futuna Territory of the Wallis and Futuna Islands	Overseas collectivity of France		Mata-Utu	15,398
			West Papua West Papua Province	Province of Indonesia		Manokwari	551,791